Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit fe0edcb7 authored by Eugene (jno) Dvurechenski's avatar Eugene (jno) Dvurechenski Committed by Christian Borntraeger
Browse files

KVM: s390: Enable up to 248 VCPUs per VM 



This patch allows s390 to have more than 64 VCPUs for a guest (up to
248 for memory usage considerations), if supported by the underlaying
hardware (sclp.has_esca).

Signed-off-by: default avatarEugene (jno) Dvurechenski <jno@linux.vnet.ibm.com>
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
parent 5e044315

arch/s390/include/asm/kvm_host.h

+1 −1
Original line number Diff line number Diff line
@@ -27,7 +27,7 @@ 


#define KVM_S390_BSCA_CPU_SLOTS 64

#define KVM_S390_ESCA_CPU_SLOTS 248

#define KVM_MAX_VCPUS KVM_S390_BSCA_CPU_SLOTS

#define KVM_MAX_VCPUS KVM_S390_ESCA_CPU_SLOTS

#define KVM_USER_MEM_SLOTS 32



/*

arch/s390/kvm/kvm-s390.c

+2 −1
Original line number Diff line number Diff line
@@ -246,7 +246,8 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) 
		break;

	case KVM_CAP_NR_VCPUS:

	case KVM_CAP_MAX_VCPUS:

		r = KVM_MAX_VCPUS;

		r = sclp.has_esca ? KVM_S390_ESCA_CPU_SLOTS

				  : KVM_S390_BSCA_CPU_SLOTS;

		break;

	case KVM_CAP_NR_MEMSLOTS:

		r = KVM_USER_MEM_SLOTS;